This patch supports MVE ACLE intrinsics vcvtq_f16_s16, vcvtq_f32_s32, vcvtq_f16_u16, vcvtq_f32_u32n vrndxq_f16, vrndxq_f32, vrndq_f16, vrndq_f32, vrndpq_f16, vrndpq_f32, vrndnq_f16, vrndnq_f32, vrndmq_f16, vrndmq_f32, vrndaq_f16, vrndaq_f32, vrev64q_f16, vrev64q_f32, vnegq_f16, vnegq_f32, vdupq_n_f16, vdupq_n_f32, vabsq_f16, vabsq_f32, vrev32q_f16, vcvttq_f32_f16, vcvtbq_f32_f16.

Please refer to M-profile Vector Extension (MVE) intrinsics [1]  for more details.
[1] https://developer.arm.com/architectures/instruction-sets/simd-isas/helium/mve-intrinsics

2020-03-17  Andre Vieira  <andre.simoesdiasvieira@arm.com>
            Mihail Ionescu  <mihail.ionescu@arm.com>
            Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

	* config/arm/arm-builtins.c (UNOP_NONE_NONE_QUALIFIERS): Define macro.
	(UNOP_NONE_SNONE_QUALIFIERS): Likewise.
	(UNOP_NONE_UNONE_QUALIFIERS): Likewise.
	* config/arm/arm_mve.h (vrndxq_f16): Define macro.
	(vrndxq_f32): Likewise.
	(vrndq_f16) Likewise.
	(vrndq_f32): Likewise.
	(vrndpq_f16): Likewise.
	(vrndpq_f32): Likewise.
	(vrndnq_f16): Likewise.
	(vrndnq_f32): Likewise.
	(vrndmq_f16): Likewise.
	(vrndmq_f32): Likewise.
	(vrndaq_f16): Likewise.
	(vrndaq_f32): Likewise.
	(vrev64q_f16): Likewise.
	(vrev64q_f32): Likewise.
	(vnegq_f16): Likewise.
	(vnegq_f32): Likewise.
	(vdupq_n_f16): Likewise.
	(vdupq_n_f32): Likewise.
	(vabsq_f16): Likewise.
	(vabsq_f32): Likewise.
	(vrev32q_f16): Likewise.
	(vcvttq_f32_f16): Likewise.
	(vcvtbq_f32_f16): Likewise.
	(vcvtq_f16_s16): Likewise.
	(vcvtq_f32_s32): Likewise.
	(vcvtq_f16_u16): Likewise.
	(vcvtq_f32_u32): Likewise.
	(__arm_vrndxq_f16): Define intrinsic.
	(__arm_vrndxq_f32): Likewise.
	(__arm_vrndq_f16): Likewise.
	(__arm_vrndq_f32): Likewise.
	(__arm_vrndpq_f16): Likewise.
	(__arm_vrndpq_f32): Likewise.
	(__arm_vrndnq_f16): Likewise.
	(__arm_vrndnq_f32): Likewise.
	(__arm_vrndmq_f16): Likewise.
	(__arm_vrndmq_f32): Likewise.
	(__arm_vrndaq_f16): Likewise.
	(__arm_vrndaq_f32): Likewise.
	(__arm_vrev64q_f16): Likewise.
	(__arm_vrev64q_f32): Likewise.
	(__arm_vnegq_f16): Likewise.
	(__arm_vnegq_f32): Likewise.
	(__arm_vdupq_n_f16): Likewise.
	(__arm_vdupq_n_f32): Likewise.
	(__arm_vabsq_f16): Likewise.
	(__arm_vabsq_f32): Likewise.
	(__arm_vrev32q_f16): Likewise.
	(__arm_vcvttq_f32_f16): Likewise.
	(__arm_vcvtbq_f32_f16): Likewise.
	(__arm_vcvtq_f16_s16): Likewise.
	(__arm_vcvtq_f32_s32): Likewise.
	(__arm_vcvtq_f16_u16): Likewise.
	(__arm_vcvtq_f32_u32): Likewise.
	(vrndxq): Define polymorphic variants.
	(vrndq): Likewise.
	(vrndpq): Likewise.
	(vrndnq): Likewise.
	(vrndmq): Likewise.
	(vrndaq): Likewise.
	(vrev64q): Likewise.
	(vnegq): Likewise.
	(vabsq): Likewise.
	(vrev32q): Likewise.
	(vcvtbq_f32): Likewise.
	(vcvttq_f32): Likewise.
	(vcvtq): Likewise.
	* config/arm/arm_mve_builtins.def (VAR2): Define.
	(VAR1): Define.
	* config/arm/mve.md (mve_vrndxq_f<mode>): Add RTL pattern.
	(mve_vrndq_f<mode>): Likewise.
	(mve_vrndpq_f<mode>): Likewise.
	(mve_vrndnq_f<mode>): Likewise.
	(mve_vrndmq_f<mode>): Likewise.
	(mve_vrndaq_f<mode>): Likewise.
	(mve_vrev64q_f<mode>): Likewise.
	(mve_vnegq_f<mode>): Likewise.
	(mve_vdupq_n_f<mode>): Likewise.
	(mve_vabsq_f<mode>): Likewise.
	(mve_vrev32q_fv8hf): Likewise.
	(mve_vcvttq_f32_f16v4sf): Likewise.
	(mve_vcvtbq_f32_f16v4sf): Likewise.
	(mve_vcvtq_to_f_<supf><mode>): Likewise.

gcc/testsuite/ChangeLog:

2020-03-17  Andre Vieira  <andre.simoesdiasvieira@arm.com>
            Mihail Ionescu  <mihail.ionescu@arm.com>
            Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

	* gcc.target/arm/mve/intrinsics/vabsq_f16.c: New test.
	* gcc.target/arm/mve/intrinsics/vabsq_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtbq_f32_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtq_f16_s16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtq_f16_u16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtq_f32_s32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtq_f32_u32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvttq_f32_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vdupq_n_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vdupq_n_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vnegq_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vnegq_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrev32q_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrev64q_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrev64q_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndaq_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndaq_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndmq_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndmq_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndnq_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndnq_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndpq_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndpq_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndq_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndq_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndxq_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vrndxq_f32.c: Likewise.